It's often said by Protestants that the Lord Jesus claimed, after sharing the first Eucharist with His apostles, that He would not drink of "this" fruit of the vine until He was in His Father's Kingdom.
This having been stated, the Protestants often say, we can conclude that:
- That which was in the cup was clearly not His Blood, as He seemed to call it "the fruit of the vine," and
- As He did not drink wine but "vinegar" on the Cross, the Kingdom of His Father is yet to come, and will come at the end of the age of the Gentiles as prophesied in Revelation.
Aside from the fact that St. Luke's account places the statement before the Eucharist (thus adding support to our belief that the contents of the cup were Blood and not wine), the liquid that Christ drank on the Cross was not vinegar as we know it, but actually a sour wine--the fruit of the vine.
Proof of this can be seen by paralleling the Sacrifice of our Paschal Lamb with the type and shadow of the sacrifices of lambs by high priests in Passovers past: At the appointed time, the High Priest would say “I thirst” and drink a cup of sour wine. Then he would say, “It is finished” as he killed the lamb. The lamb was then placed in the oven before sundown with all of its bones intact. Our Lord fulfilled this perfectly, for not only did He, as our High Priest, utter "I thirst" at the right moment, but He also drank the fruit of the vine on the Cross. And since He said He would not do so again until He did so in the Kingdom, it is clear that the so-called "millenial" Kingdom of the Father ("1,000 years" or "millenium" is simply apocalyptic language for "a really long time that has an eventual end") has come! The Kingdom of Heaven is now!